If aliens showed up, were photographed, interviewed, (or at least interviewed about and otherwise documented, people would have their precious evidence. They would have captured our minds via the Trojan Horse of documented evidence. We would still be deceived.
Alternatively, they could 'just' be aliens.
I mean in the realms of likelihood, is it more probable that an alien would turn up or .... ffs I'm a grown man, I'm not discussing this drivel.
Je suis Charlie. Je suis Ahmed. Je suis Juif. Je suis Parisien. I am Mancunian. I am Brum. I am London.I am Finland. Soy Barcelona
"Life, don't talk to me about life" - Marvin the Paranoid Android
"Science adjusts it's views based on what's observed. Faith is the denial of observation so that Belief can be preserved." - Tim Minchin, in his beat poem, Storm.